一个公开的民意测验无法代替思考。
"Every book is a journey, and every journey changes you."
In mathematics, you don't understand things. You just get used to them.
轻盈不仅是物理上的，也是精神上的。
世界充满了神奇的东西，它们在耐心地等待我们变得更有智慧。